ES6 Module Transpiler (rhengles fork)

0.3.0 verified Fri May 01 auth: no javascript deprecated

Experimental compiler that transforms a subset of ES6 module syntax into AMD or CommonJS modules. Version 0.3.0, unmaintained since 2015. Key differentiator: early ES6 module syntax experimentation, but the syntax it supports differs from the finalized ES6 spec. No longer recommended for new projects; use Babel or TypeScript instead.

Common errors

error Cannot find module 'es6-module-transpiler' ↓

cause The package is not installed or the import path is incorrect.

fix

Run npm install es6-module-transpiler and ensure the module is in node_modules.

error Compiler is not a constructor ↓

cause Using `require('es6-module-transpiler')` returns an object with `Compiler` property, but if you import the default incorrectly.

fix

Use const { Compiler } = require('es6-module-transpiler');

error Unexpected token 'export' ↓

cause The JavaScript file uses ES6 module syntax but is not processed by the transpiler.

fix

Run the code through compile-modules or use the Compiler class programmatically.

Warnings

deprecated The ES6 module syntax supported by this transpiler is outdated and not compliant with the finalized ES6 specification. ↓

fix Migrate to Babel or TypeScript for modern module transpilation.

gotcha The `compile-modules` CLI command may not be installed correctly if the package is not installed globally with the exact URL from Git. ↓

fix Use `npx es6-module-transpiler` or install globally via `npm install -g es6-module-transpiler` if available, but prefer library usage.

gotcha The transpiler does not support destructuring or other modern JavaScript features—only a strict subset of ES6 module syntax. ↓

fix Write code using only supported syntax: export/import declarations, no destructuring, no default exports for modules.

Install

npm install es6-module-transpiler-rhengles

yarn add es6-module-transpiler-rhengles

pnpm add es6-module-transpiler-rhengles

Imports

Compiler
wrong
```
const Compiler = require('es6-module-transpiler').Compiler
```
correct
```
import { Compiler } from 'es6-module-transpiler'
```
The library provides a CommonJS default export; using named import may fail in some bundlers.
default (module)
wrong
```
const transpiler = require('es6-module-transpiler')
```
correct
```
import transpiler from 'es6-module-transpiler'
```
In ESM environments, default import works but the transpiler expects CommonJS.

Formatter

wrong

var Formatter = require('es6-module-transpiler').Formatter

correct

import { Formatter } from 'es6-module-transpiler'

Formatter may not be exported in all versions.

Quickstart

Shows how to use the Compiler class to transpile ES6 module syntax to AMD and CommonJS.

const { Compiler } = require('es6-module-transpiler');

const code = `
  export function square(x) {
    return x * x;
  }
`;

const compiler = new Compiler(code, 'myModule');
const amdOutput = compiler.toAMD();
console.log(amdOutput);
// Outputs AMD define(...)

const cjsOutput = compiler.toCJS();
console.log(cjsOutput);
// Outputs CommonJS exports...